Shelly's ears went flat, her scowl unable to be contained to her face. I defensively raised my hands, trying to placate her. “Look, I'm sorry, but I don't think I'll be able to move tomorrow if I keep going like this.” Her expression lightened a little, and some humor was showing as she pressed her finger to my nose. “You are NOT getting out of this that easily. You can clean up, then get right back in here. I’LL take care of the rest.”


A lascivious grin spread across my face as I thought about what was in store. I swelled up all over again, and poor Jack-Jack jerked. I felt him shudder, then his penis bobbed a few times, producing nothing. I had apparently squeezed him dry. I made soothing noises as I petted the boy, knowing that dry cums have a tendency to be painful, or at least overwhelming. I decided that it was time to calm down. I have a massive shower, we could all fit.


“Shelly, get Jessi, let's all cool off.” I grabbed Jack's legs, holding him up and as still as possible while I stood and walked to the bathroom. I sat on the bench in the shower, and waited for my sister to show up. I set the water as cold as we could stand, and both washed the kid we were holding. After five minutes or so, I finally shrank enough to separate from Jackie without hurting him. I gaped as he clamped shut quickly, nothing escaping from him. I saw him with new eyes, wondering how a twelve-year-old had such control.


I noticed that Jack-Jack was nodding off a little and Jessie hadn't really woken up yet, so I helped him dry off, then sent him to lie down with his sister. I got back into the shower, and actually managed to get Shelly clean without doing more than getting aroused. After we were dried off, I leaned her against the wall, grabbing and groping every inch of her that I could while we kissed, deeply and with a little desperation.


We broke apart, gasping for air. I tenderly stroked her cheek, then nuzzled up against my older sister's chin. Without a word, we stood for a while, cuddling and gently touching each other. I straightened, then looked my love in the eye. “Shelly, I love you.” With that simple declaration, I picked her up and carried her to my - no, our room.  I smiled at the sleeping cubs, curled up on a corner of the bed. I set their mother down gently, then just stared for a moment, mesmerized by the sight of my fantasy made real: my beautiful sister, naked and horny, on my bed.


I crawled up over her, then our gazes locked while we smiled at each other. We kissed again, almost chastely, then I started kissing my way down her neck. I nibbled at her throat, delighting in her twitches. I made my way further down, enjoying the slope of her breasts. I latched onto a nipple, rolling my tongue over the pebbly protuberance. Shelly gripped the sheets, so I kept teasing, delicately licking, and slightly grazing her nipple with my teeth. She gave a frustrated groan, so I changed my focus to the other nipple after kissing my way through the valley between them.


After mere moments of the same treatment, she was writhing. Then she smacked my head, moaning, “Get on with it, please!” I stopped, lifting my head with a loud pop. She was somewhat bleary as I arched an eyebrow at her. “Shelly. Dear heart. You made me wait for this for years. I'll take my sweet time.” She whined, closing her eyes and gripping tighter. I traced my way down her belly, occasionally rubbing my nose in her sparse but silky fur while I was finding and attending to each and every vestigial nipple she had. Having lost their purpose with Ascendance, they were little more than instruments of pleasure. She struggled to stay calm, whining and jerking, but she let me do as I pleased.


As I reached the Y of her legs, I dragged my teeth through the coarse hairs of her bush. The scent of her desire was beginning to be overwhelming, and I was losing interest in anymore teasing. I kissed her mound, showering her cleft with affection. Her clit was straining against her hood as I slowly intensified my attentions. I began to alternate between kisses and licks, lapping up her overflowing nectar. I licked more and more, kissing less as I went, then I folded back my sister's hood with my tongue. Shelly groaned and shuddered, her thighs gripping my face as my tongue swirled around her throbbing clit. I wrapped my lips around the nub, gently sucking on it.


Out of nowhere, I was pushed, nearly slapped, away from my ministrations. I yelped and sent a wounded stare up to Shelly, but she was almost in tears, covering her pussy. “Sorrysorrysorry! I'm so sorry, baby, but your lip, it hurt!” I rubbed my lips, not understanding, but I figured it out quickly. I had a layer of (kinda) long stubble on my upper lip, and it felt a little sharp, even to my callused fingers. It must have been agony when it pressed into her sensitive hood. I apologised and ran to the bathroom to shave. When I came back, my sister was laying back with her arm covering her eyes, muttering, “Dammit, Shelly, you can't do anything right. Hit him again, stupid! Why don't you just kick him in the nuts next time! You stupid-”


I interrupted her soliloquy with a kiss, and lay next to her. I reached up and petted her cheek and head. “You know, I can't believe that I'm the one having to say this, but you should relax. I want our first time together to be beautiful, and messing that up just because I forgot to shave would be stupid. Now, my beard hurt, right?” She nodded, her face still covered. I kissed the side of her mouth. “And you didn't like that hurt, right?” She shook her head no. I started to run my fingers over the light colored skin of her stomach. “And that's why I'm glad you said something. I don't want to do things you don't like. Because, honestly? I have no idea what the fuck I'm doing. If you don't tell me what you like, I'm flying blind. I'll keep going, sure, but I'd like to think I can learn to treat you better than just flailing around and hoping to get lucky.”


Shelly finally moved her arm, and looked at me with a weak, teary smile. “OK.” Her tiny voice made me feel protective, wanting to grab a club and run outside of the cave, screaming bloody murder. I decided to settle for just pulling her to my chest. I held her for a moment, but the spell was broken when she started to giggle. I had popped another boner, and it was poking her in the leg. I lowered my voice, unable to resist. “Hey, baby. If I told you I love your body, would you hold it against me?” We laughed and started to get back into the mood, touching and nipping at each other. I heard a sigh from next to us, and looked over to see our son watching us while he scratched between Jessi's ears.


I reached over and ruffled his head fur, apologizing. “Sorry, kiddo. I need to get all your mom's itches scratched before I can look after anyone else.” He smiled and nodded, not moving, just watching intently. I began to move back into position, getting ready to go down on Shelly again. She grabbed my arm. “Honey, I can't wait anymore. Please fuck me.” My ears drooped as I stopped. I turned up to look at her face, unwilling to give up, willing to beg. “Please? Please let me do this…” She stared at me, bewildered. “Wait, you want to-? But guys only go down because they have to!” I groaned, nearly growling in my frustration. “I don't know what lies that limp-dicked bastard told you, but I. Want. This. Baby, I've dreamed of eating you out since I found out what it is. I want to taste you, feel you on my tongue. Please. Let me do this!”


I smelled the sweet tang of Shelly’s suddenly renewed arousal as I watched a flush spread up her ears, then slowly become visible through the lighter, thinner fur on her belly. My unvarnished desire had done the trick, as my sister shyly spread her legs, her breathing quickening. I knelt beside the bed, pulling her to the edge despite her yip. I placed her thighs on my shoulders, lowering my face until I could inhale her fragrance. I huffed a few times, reveling in her scent. I spread her open, admiring her pink folds, and then, fresh out of restraint, I dove in. I swiped my tongue from her taint, through her vestibule, and past her clit. I loved the feel of her legs twitching against my hands, as my lover gasped and shuddered at my touch. On my way back down, I rubbed my nose against her clit, loving the texture of the stiff and spongy bud against me.


I poked Shelly's butt with a finger to get her attention. “Hey, remember? Flying blind here…” She craned her neck to glare at me. “Do whatever you want, I'll let you know if something isn't working for me, alright? Now, stop talking!” I obeyed. I kept lapping up her sweet, musky juices, delving deeper and deeper in my single-minded quest for more. Before long, I was simply dipping my tongue in and out of her, using as much of my long, canine tongue as I could shove into her. I came to my senses a little, and started trying to purposely pleasure my sister, instead of it being incidental to my selfishness.


I scraped the sides of her pussy, searching for spots that earned a stronger shudder, or a louder gasp. I finally found a relatively rough patch that made Shelly clench her thighs against my head, and I focused on it. I did my best to vary my attacks on the spot, and seemed to do well. She began to thrash and grunt, internal ripples massaging my tongue. Suddenly, she grabbed my head, blunt claws digging into my scalp as she seemed to try to pull me into herself. I actually had to fight back, my jaws achingly wide as I did everything I could to keep my fangs from digging into her crotch. Once I got my tongue back, I sat on my haunches, panting. Shelly sat up, pointing at me. “You. On the bed. NOW.”


I crawled into bed and flopped on my back, catching my breath. My sister climbed on top of me, her weight feeling nonexistent. I rubbed her back as we kissed, my hands roaming lower until I was holding and kneading both of her ass cheeks. She recovered enough to look at me, a faint grin on her face. “Eric. You fiend. If I had known that you could give head like that, I would have never left the damn house. Shit, I would have figured out how to have your pups, even if you were a girl!” I smiled, ridiculously pleased with the praise, but I felt a need for honesty. “I'll be glad to oblige, any time, but remember: don't count on it being worth a crap next time. I still don't know what I'm doing.”


Shelly pushed herself upright, straddling my waist. She arched her back as she swiped sweat-matted hair out of her ears. I watched her move, in a daze, unsure if she was putting on a show, or naturally acting so alluring. Either way, I was unable to keep myself from expressing my “appreciation” against her crack. She glanced back at my manhood pressing against the base of her tail, then gave me a sultry smile. “I'm not saying ‘no,’ just ‘not yet,’ alright?” I stuttered, taken off guard at the welcome declaration. I was unable to form a coherent sentence before she lifted herself up and scooted over my shaft, clasping it within her fiery gash. The stimulation pushed me dangerously close to peaking, but I managed to hold back.


Shelly slid back and forth, her wet lips clinging to me, hot lubrication dripping over the red of my cock as she dragged her clit against me. After only  seconds of her routine, I was gasping for mercy, perilously close to cumming all over my stomach. My sister threw her head back in a full-throated laugh. “Payback’s a bitch, ain't it?” She stopped, but stayed on me, flexing and squeezing, torturing me while she laughed. I couldn't take it anymore, I lifted her up and slammed her back down, hilting her in a single stroke. Shelly screamed her approval. “AAAaaah… Finally…” I stayed still, holding her down as the throbbing receded somewhat. She leaned forward, her internal muscles feeling like they were twisting side to side.


“Hmm. You know, you can cum anytime you want, I don't mind. You deserve it. After all, I owe you the chance to make Jackie and Jessi at least one sibling.” I groaned deeply, my control almost slipping from just the thought of planting a child in her. I looked up at the fertility goddess on top of me, and shook my head ruefully. “Dammit woman. I wish I could…” Shelly froze, aghast. She stared at me, eyes bulging as she stammered out her denial. “No, you didn't! Eric, you can't have! You got cut?!” I blinked, confused for a second, then I laughed and pulled her down for a hug. I held her close while I quickly explained. “No! No, no, no. I got treated, a few years ago. I'm only firing blanks until I can get the neutralizing injection. I just wish I could do it now, and not have to wait.”


Shelly straightened, wiping her eyes with the back of her hand. She had a hitch in her voice as she began to move up and down. “You better not have. I don't know what I'd do if you had done something permanent.” I rubbed her belly, the distraction of conversation helping me withstand the heat and pressure of her pussy. “Don't worry, I'll give you as many kids as you're willing to bear. If you'd like, you can be barefoot and pregnant for the rest of your life.” I got a fake glare in return for my declaration. “I'll hold you to that. You'd better believe it.” Shelly's pace quickened, her grip unbelievable for a woman who had given birth to two kids. I started trying to thrust up to meet her, but she slapped my stomach. “Let me take care of this. Plus, I like the way you're looking at me.”


I was astounded at the stamina I was showing. I had really expected to blow my top as soon as I was in, but it looked like I was going to have to be the one to finish. Despite her best efforts, Shelly drooped lower and lower, slowly unable to support her movements as the combination of pleasure and joint pain sapped her strength. I gripped her butt, lifting her on her way up. Before long, she tapped out. “Dammit! Eric, my fucking hips hurt. Can you-?” I slipped free of her silken suction, and I set her on the mattress. She leaned across her folded legs, catching her breath. I knelt behind her, and pulled her up by the waist. As I admired the matted fur on the ass before me, Shelly slowly swung her tail to the side, presenting her sodden gash to me.


I lined myself up, and as my pointed tip slid into place, I heard a determined murmur. “Don't you fucking stop until you're done. Even if it's not gonna knock me up, we can still practice.” I answered by slamming home, earning a grunt from her. I started to pick up speed, my knot finally beginning to swell, slapping in and out of her as I hunched over to grab her breasts. I held a tit in one hand, and sent my other to go between her legs, rubbing her clit. As I swelled past the point of no return and tied us together, Shelly began to flex and ripple, grunting again as I began to use short, fast strokes. “Oh, god, ERIC!” The sound of my name pushed me over the edge, and I began to pound faster and harder as I started to cum. Grunts and gasps, interspersed with “God!” and “Yes!” sounded like music to my ears as I pistoned my way through an orgasm that felt longer and stronger than anything that I had done today.


I slowed to a stop, my back no longer able to sustain my motion. I fell limply onto my sister, only able to passively enjoy the movements of her body. She still pulsated inside, and I could feel her abdominal muscles contracting with my fingertips as I lightly gripped her by the stomach. I gave a heave and dropped to my back, pulling her with me. She lay bonelessly on top of me, eyes unfocused as she drooled down her neck. I played with her nipples as I rested, eliciting new twitches as I pinched and tweaked the sensitive buds. I caught my breath and realized that I had maybe set the bar too high today. There was no way I could do this with any regularity, especially if I was to ‘look after’ all three. There's only so much stimulation that breaking taboo can provide before my lack of skill started to become obvious.


Lost in my self-depreciation, I was surprised by the kiss that I had put on me. Shelly had craned her head back awkwardly and stretched up to reach my lips. We smooched a few times, then I rubbed our cheeks together. She grabbed my hands, then placed both of my palms flat on her stomach. “Not today, Eric. Not today, but soon.” I was still ejaculating, only the tolerance of long (solo) experience letting me keep my wits, but her words were almost too much. My pleasure rose again, and my spurts strengthened in response to the weighty statement. I hugged my woman tightly, returning the sentiment. “Yes. Soon.”


I looked over at our oldest children, watching them rest. Jack-Jack had fallen back asleep, seemingly lulled by the sight of our lovemaking. Jessi was huddled together with him, still softly breathing. I twisted, dropping Shelly to the bed. I tossed a throw blanket from beside the bed over the kids, and covered myself and their mother with a thick sheet. We spooned affectionately as we enjoyed the feel of the tie, while I was rubbing her belly and fantasizing about more cubs. I fell asleep while I was still inside, my last thoughts of the future. “Soon, Shelly. Soon.”